Skill Aluminium - Science / Magic (Grey)

Boys loved it

Pretty mis-leading imagery i think. I should have looked into it further.Thought it was a magnetic ball that floated above the device.Pointless, expensive, waste of money.

I don't understand the equation that explains what happens in the tunnel but its an impressive affect of magnetism.

Lots of fun

I ONLY HAD IT FOR 10 SECS BUT WHEN YOU LOCK ON TARGET AND FIRE YOUR SCUD MISSLE AT IT ...IT DENTS

i have only had it for a minute and when you throw it and it hits the side it dents

I have only had it for 15 seconds and if you drive a tank over it and fire a missile it dents!

The product is very expensive BUT it does demonstrate Lenz's Law. It's easy really. When an electric current flows though a conductor (wire ) it induces a magnetic field in the conductor. i.e. whilst the current is flowing , the conductor becomes a magnet. The magnet has a magnetic field. When a magnet is positioned near another magnet , it either repels or attracts it. So , as the magnetic ball is falling within the tube , it produces a magnetic field in the tube which interferes with the falling motion of the ball .i.e. it slows it down considerably. Do the experiment with long aluminium tubes ( over 1 m long ) and repeat with copper tube ( over 1m long ). Use tubes of varying diameter too - obviously wide enough to allow the magnetic sphere to drop through it. The material of the tube does affect the strength of the induced magnetic field though. Have fun !